Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

It is currently 25 May 2017, 20:26

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Is a^n > b^n?

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Director
Director
avatar
Joined: 28 Jul 2011
Posts: 550
Location: United States
Concentration: International Business, General Management
GPA: 3.86
WE: Accounting (Commercial Banking)
Followers: 3

Kudos [?]: 238 [0], given: 16

Is a^n > b^n? [#permalink]

Show Tags

New post 14 Dec 2011, 03:38
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

67% (01:41) correct 33% (00:33) wrong based on 9 sessions

HideShow timer Statistics

Is a^n > b^n?

(1) a > b
(2) n is any positive quantity
[Reveal] Spoiler: OA

_________________

+1 Kudos If found helpful..

1 KUDOS received
Intern
Intern
avatar
Joined: 12 Oct 2011
Posts: 20
Location: United States
GMAT 1: 720 Q50 V36
Followers: 0

Kudos [?]: 20 [1] , given: 5

Reviews Badge
Re: Is a^n > b^n? [#permalink]

Show Tags

New post 14 Dec 2011, 04:26
1
This post received
KUDOS
Quote:
I thought the answer is C, but the OA is E? How can it be,can anyone please explain?


lets say
a=2
b=1
n = 2
a^n = 4
b^n = 1
a^n>b^n

a = -1
b = -2
n = 2
a^n = 1
b^n = 4
here a^n < b^n


Do you see where you went wrong?
Retired Moderator
User avatar
Status: 2000 posts! I don't know whether I should feel great or sad about it! LOL
Joined: 04 Oct 2009
Posts: 1672
Location: Peru
Schools: Harvard, Stanford, Wharton, MIT & HKS (Government)
WE 1: Economic research
WE 2: Banking
WE 3: Government: Foreign Trade and SMEs
Followers: 103

Kudos [?]: 992 [0], given: 109

Re: Is a^n > b^n? [#permalink]

Show Tags

New post 14 Dec 2011, 11:39
+1 E

Don't forget to consider the case when a and b are both negative.
_________________

"Life’s battle doesn’t always go to stronger or faster men; but sooner or later the man who wins is the one who thinks he can."

My Integrated Reasoning Logbook / Diary: http://gmatclub.com/forum/my-ir-logbook-diary-133264.html

GMAT Club Premium Membership - big benefits and savings

Director
Director
avatar
Joined: 28 Jul 2011
Posts: 550
Location: United States
Concentration: International Business, General Management
GPA: 3.86
WE: Accounting (Commercial Banking)
Followers: 3

Kudos [?]: 238 [0], given: 16

Re: Is a^n > b^n? [#permalink]

Show Tags

New post 15 Dec 2011, 18:39
Thanks a lot Guys got it..............
_________________

+1 Kudos If found helpful..

Re: Is a^n > b^n?   [#permalink] 15 Dec 2011, 18:39
    Similar topics Author Replies Last post
Similar
Topics:
3 Experts publish their posts in the topic If n and m are integers, is bn > bm? Bunuel 8 13 Mar 2017, 12:35
2 Experts publish their posts in the topic Is r > s ? agnok 6 24 Jul 2016, 08:02
1 Experts publish their posts in the topic Is a > b ? Maude 5 04 Sep 2015, 04:45
9 Experts publish their posts in the topic If a^m = b^n and if a ≠ b ≠ m ≠ n, what is the value of a + b + m + n? dkverma 4 21 Oct 2016, 14:37
Experts publish their posts in the topic A home owner must pick b/n paint A, which cost $6.00 per sacmanitin 12 12 May 2013, 02:50
Display posts from previous: Sort by

Is a^n > b^n?

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


cron

GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.